<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
      <image
      @click="preview(i)"
       :src="item.pics_big" ></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}} </view>
        <!-- 信息主体区域 -->
        <view class="goods-info-body">
          <!-- 商品名称 -->
          <view class="goods-name">{{goods_info.goods_name}} </view>
           <!-- 收藏 -->
           <view class="favi">
             <uni-icons type="star" size="18" color="gray"></uni-icons>
             <text>收藏</text>
           </view>
          </view>
        <!-- 运费 -->
          <view class="yf">快递：免运费----{{cart.length}}</view>
    </view>
    	<rich-text :nodes="goods_info.goods_introduce"></rich-text>
      <!-- 商品导航组件 -->
      
      <view class="goods_nav">
          <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
      
      </view>
  </view>
</template>

<script>
  import { mapState,mapMutations,mapGetters} from 'vuex'
  export default {
    computed:{
     ...mapState('m_cart', ['cart']),
     ...mapGetters('m_cart', ['total']),
    },
    watch: {
      total:{
        // 1. 监听 total 值的变化，通过第一个形参得到变化后的新值
     handler(newVal) {
          // 2. 通过数组的 find() 方法，找到购物车按钮的配置对象
          const findResult = this.options.find((x) => x.text === '购物车')
          if (findResult) {
            // 3. 动态为购物车按钮的 info 属性赋值
            findResult.info = newVal
          }
        },
        immediate: true
      }
      },
  
    
    data() {
      return {
         // 定义商品详情对象
          goods_info: {},
            options: [{
          			icon: 'shop',
          			text: '店铺',
          		}, {
          			icon: 'cart',
          			text: '购物车',
          			info: 0
          		}],
               buttonGroup: [{
              	      text: '加入购物车',
              	      backgroundColor: '#ff0000',
              	      color: '#fff'
              	    },
              	    {
              	      text: '立即购买',
              	      backgroundColor: '#ffa200',
              	      color: '#fff'
              	    }
              	    ]
      }
    },
    onLoad(options){
      // console.log(options);
      // 获取商品id
      const goods_id=options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart',['addToCart']),
      async getGoodsDetail(goods_id){
    const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
    // console.log(res);
    if(res.meta.status!==200) return uni.$showMsg()
   res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
     // 为 data 中的数据赋值
     this. goods_info=res.message
      },
      preview(i){
        uni.previewImage({
            current: i,
             urls: this.goods_info.pics.map(a=>a.pics_big)
        })
      },
      onClick(e) {
        // console.log(e)
        if(e.content.text==='购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      
      buttonClick(e){
        // console.log(e);
         if(e.content.text==='加入购物车'){
        const goods={
            goods_id: this.goods_info.goods_id,       // 商品的Id
                   goods_name: this.goods_info.goods_name,   // 商品的名称
                   goods_price: this.goods_info.goods_price, // 商品的价格
                   goods_count: 1,                           // 商品的数量
                   goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
                   goods_state: true                         // 商品的勾选状态
        }
          this.addToCart(goods)
         }
      }
    },
    
   
  }
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image{
    width: 100%;
    height: 100%;
  }}
  .goods-info-box {
     padding: 10px;
      padding-right: 0;
      .price {
      color: #c00000;
      font-size: 18px;
      margin: 10px 0;
      }
  .goods-info-body {
    display: flex;
    justify-content: space-around;
       .goods-name {
          font-size: 13px;
          padding-right: 10px;
        }
        .favi {
          width: 120px;
           font-size: 12px; 
           display: flex;
           flex-direction: column;
           justify-content: center;
            align-items: center;
             border-left: 1px solid #efefef;
             color: gray;
        }
  }
   .yf {
      margin: 10px 0;
      font-size: 12px;
      color: gray;
    }
  }
  .goods_nav {
    position: fixed;
     bottom: 0;
      left: 0;
      width: 100%;
  }
  .goods-detail-container {
    padding-bottom: 50px;
  }
</style>
